{lib, ...}: {
  programs.nixneovim = {
    globals = {
      mapleader = " ";
      maplocalleader = " ";
    };
    mapping = let
      normal_and_insert = {
        "<Esc>" = {
          action = "'<cmd>noh<CR><Esc>'";
          desc = "Disable the search highlighting and send Escape";
        };
      };
    in {
      insert =
        lib.recursiveUpate {
          "hh" = {
            action = ''
              function()
                local cmp = require('cmp');
                local luasnip = require('luasnip');

                if cmp.visible() then
                    cmp.select_next_item()
                elseif luasnip.expand_or_locally_jumpable() then
                    luasnip.expand_or_jump()
                end
              end
            '';
            desc = "completion trigger/ forward in completen menu";
          };
          "<S-Tab>" = {
            action = ''
              function()
                local cmp = require('cmp');
                cmp.confirm()
              end
            '';
            desc = "confirm the selected item";
          };
        }
        normal_and_insert;
      normalVisualOp = {
        # yank/ cut to the system clipboard
        "<leader>y" = "'\"+y'";
        "<leader>Y" = "'\"+Y'";

        # Unmap some old keys
        #"s" = "'<Nop>'";
        #"t" = "'<Nop>'";
        "<Up>" = "'<Nop>'";
        "<Down>" = "'<Nop>'";
        "<Left>" = "'<Nop>'";
        "<Right>" = "'<Nop>'";

        # remap dvorak
        "l" = "n";
        "L" = "N";
        "k" = "t";
        "K" = "T";
        "j" = "k";
        "J" = "K";

        # Change Vim-keys
        "h" = "<left>";
        "t" = "g<down>";
        "n" = "g<up>";
        "s" = "<right>";

        # Move display lines
        "0" = "g0";
        "$" = "g$";
      };
      normal =
        lib.recursiveUpdate {
          "<Tab>" = {
            action = "':'";
            desc = "jump to command line";
          };

          "N" = {
            action = "vim.diagnostic.goto_prev()";
            desc = "go to previous diagnostic message";
          };
          "T" = {
            action = "vim.diagnostic.goto_next()";
            desc = "go to next diagnostic message";
          };
          "<leader>e" = {
            action = "vim.diagnostic.open_float()";
            desc = "open float for the symbol";
          };
          "<leader>q" = {
            action = "vim.diagnostic.setloclist()";
            desc = "add buffer diagnostic to the location list (quick-fix)";
          };

          # Splits
          "<C-t>" = {
            action = "'<C-w>p'";
            desc = "go to previous split";
          };
          "<C-n>" = {
            action = "'<C-w>w'";
            desc = "go to next split";
          };
          "<leader>-" = {
            action = "'<C-W>s'";
            desc = "New horizontal split";
          };
          "<leader>|" = {
            action = "'<C-W>v'";
            desc = "New vertical split";
          };

          # Exit insert mode after creating a new line above or below the current line.";
          "o" = "'o<Esc>'";
          "O" = "'O<Esc>'";

          # Center the cursor vertically when moving to the next word during a search.
          "n" = "'nzzzv'";
          #"N" = "'Nzzzv'";

          "<leader>p" = {
            action = "'\"_dP'";
            desc = "keep the cut thing in the base register";
          };

          "<leader>d" = {
            action = "'\"_d'";
            desc = "delete without saving to register";
          };
          "dd" = {
            action = ''
              function()
                if vim.api.nvim_get_current_line():match("^%s*$") then
                  return '"_dd'
                else
                  return "dd"
                end
              end
            '';
            desc = "Pipe all blank line deletions to the blackhole register";
            expr = true;
            silent = true;
          };

          "<leader>s" = {
            action = "':%s/\\<<C-r><C-w>\\>/<C-r><C-w>/gI<Left><Left><Left>'";
            desc = "replace for the word under the cursor";
          };

          "<C-s>" = {
            action = "'<cmd>mksession! <CR>'";
            desc = "to overwrite/create a session";
          };

          "<leader>X" = {
            action = "'[[!!$SHELL <cr>]]'";
            desc = "Read the current line and execute that line in your $SHELL. The resulting output will replace the curent line that was being executed.";
          };
        }
        normal_and_insert;
      terminal = {
        "<Esc><Esc>" = {
          action = "'<C-\\><C-n>'";
          desc = "Exit terminal mode with <Esc><Esc>";
        };
      };
      visual = {
        # move selected lines in visual mode
        "T" = "':m '>+1<CR>gv=gv'";
        "N" = "':m '<-2<CR>gv=gv'";
      };
    };
  };
}